Self-filling fountain-pen.



No. 772,467. PATBNTBD 00T. 18, 1904.

R. G.LOGKW 0OD. SE'LP'PILLING FOUNTAIN PEN.

APPLICATION FILED 11077.16, 1903.

NO MODEL.

UNITED STATES Patented octter 1,4 s,19o4.

PATENT OEEICE.l

RHODES e. Lockwoon, OE BOSTON, MASSACHUSETTS.

SELF-FILLING FOU NTAlN-PEN.

SPECFICATION forming part of Letters Patent No. 772,467, dated October 18, 1904.

Application filed November 16, 1903. Serial No. 181,320. (No model.)

To all whom it may concern.'

Be it known that l, RHODES G. LooKwooD, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvementsin Self-FillingFountain-Pens, of which the following is a description, reference being had to the accompanying drawings, in which- Figure 1 is .a side View, partly in section, of a fountain-pen embodying my improvements. Fig. 2 is ayplan view of Fig. 1'. Fig. 3 is a cross-section on line 3 v3 of Fig. 2. Figs. 4 and 5 are views like Fig. 3, but of a slightlymodified form, Fig. 4 showing the normal position of the parts and Fig. 5 showing the position of the parts when the bulb Yis compressed. Fig. 6 shows la modiiied i'ormoiA barrel and is hereinafterdescribed.

This invention relates to `improvements in self-filling fountain-penholders wherein an elastic ink-reservoir within the barrel oi' the fountain-pen is employed in connection with a presser-bar within the fountain-pen barrel having a finger-piece projecting through a slot in the barrel, whereby the presser-bar may be actuated to compress the elastic ink-reservoir at will. l

In the drawings, a is the barrel of a fountain-pen, b the feed-piece, which is inserted in the' open end of the Jfountain-pen barrel and secured in any well-known manner, and c the writing-pen, which is in operation held between the feed-piece and the inside of the fountain-pen nozzle, as shown in Fig. 1. rl`he elastic ink-reservoir Z is secured to the inner end of the feed-piece, with which it forms a fluid-tight joint.

e is a presser-bar arranged within the barrel of the fountainepen, to one side thereof, and havinga linger-piecef projecting through a slot g in one side of the barrel.

The pen so far described is substantially similar to the pen shown in patent to Conklin, No. 685,258, dated October 29, 1901, and patent to Oliphant, No. 448,360, dated March 17, 1891, both of which show a fountain-pen barrel with a presser-bar arranged at one side thereof, which'may be actuated to compress a compressible bulb within the barrel and so to diminish its capacity. The patent to Conk# lin, above mentioned, is provided with a projecting finger-piece. and means to lock the linger-piece against accidental actuation. The objectof my invention is also to provide means for locking 4the nger-piece of the presserbar against accidental actuation. To this end 1 provide a slot in the walls of the fountainpen barrel somewhat longer than the ringerpiece f, so that the finger-piece and the pres'ser' bar to which it is secured may be moved lengthwise oi' the barrel of the pen. 1 also provide vertical wings tupon the iinger-piece. The linger-piece f is normally positioned at one end of the slot f the wings 7L resting upon the surface'of the fountain-pen barrel behind two small projections j upon the outer surface of the barrel. When it is desired to compress the bullo within the fountain-pen barrel, the finger-piece f is forced toward the other end of the slot g, the pins briding over the projections t7' until the pins /L register with the cross-slot c', when the linger-piece may be depressed to force the presser-bar e down to compress -the bulb d, as shown in Fig. 6. The eifect of this is to greatly decrease the capacityY oi' the bulb, so that when the -lower end of the fountain-pen is immersed in ink and the pressure upon the linger-piece re-v leased the bulb by its inherent elasticity will expand and the ink will be forced into the bulb by atmospheric pressure in the wellknown manner. The bulb having been filled with ink in this manner, the linger-piece is pushed back along the slot, the wings 7b riding .over the projections j', and the iingeihpiece is thus locked against longitudinal movement unless considerable force is employed. The wings /L upon the side of the finger-piece serve to prevent the depression of the linger-piece when the linger-piece is not arranged to cause wings to'register with `slot c'. They also serve to engage the walls of slot 't' when the linger-piece is depressed to prevent the longitudinal movement of the finger-piece. When mere pins are employed instead of wings, it is not uncommon for the pins to pass through slot z' and ,engage the inner surface ofthe barrel, thus preventing the .elastic ink-reservoir from expanding.

1 have shown in Figs. 1, 2, and 3 the fingerpiece as fitted With wings L, which is the preferred construction. It will be obvious, however, that a cylindrical pin L, as shown in Figs. 4 and 5, is functionally an equivalent of the wings, except when the finger-piece is depressed.

Bar e, besides its function as a presser to p- Merate on bulb OZ, also serves as a spring to hold the Wings or pins of finger-piece f against the outer side of the pen and to yieldingly resist their passage over the projections j; but the spring action of said bar is not suliicient to compress bulb d, which is effected by thumbpressure on finger-piece f.

In Fig. 6 I have shown an alternate construction of barrel wherein instead of a projection j', extending beyond the surface of the barrel, I provide a socket y", within which Wings /L are held by the spring actionV of presser-bar e. Also the tracks j on the barrel for the Wings L-that is, the parts over which said Wings travel to reach slots @'-are inclined toward said slots, so that the wings are guided thereby directly into said slots.

I claim- 1. In a self-filling fountain-pen, the combination of a barrel having slots g and vi; an elastic inkreservoir Within the barrel; a presserbar-Within the barrel, having a finger-piece projecting through the slot g; a projection upon the finger-piece, adapted, when the iinger-piece is moved longitudinally of the slot g, to register with the slot a', to permit the finger-piece to be depressed.

2. In a self-lilling fountain-pen, the combination of a slotted barrel; an elastic ink-reservoir within the barrel; a presser-bar within the barrel having a finger-piece projecting through the slot in the barrel; a projection upon the finger-piece; a projection upon the surface of the barrel cooperating with the projcction on the linger-piece to lock the lingerpiece in inoperative position.

3. In a self-filling 'fountain-pen, the combination of a barrel having slots g/ and i; an elastic ink-reservoir within the barrel, a presserbar within the barrel; a {niger-piece fast to the presser-bar and having a projecting wing /L adapted to register with slot to permit the finger-piece to be depressed and to engage the walls of slot when the linger-piece is depressed to prevent longitudinal movement ol the presser-bar.

4. In a self-filling fountain-pen, the combination of a slotted barrel; an elastic ink-reservoir within the barrel; a spring presser-bar within the barrel having a linger-piece projecting through the slot in the barrel and a projection on the linger-piece held in engagement with the surface of the barrel by said spring presser-bar.

Signed by me at Boston, I\'Iassachusetts, this 13th day of November, 1903.

RHODES G. LOCKW O01).

I/Vitnesses:

OLIVER R. B/Irrcii'nLL, JOSEPH T. BRENNAN. 

